Details

Autor(en) / Beteiligte

• Judez, Xabier
• Eshetu, Gebrekidan G.
• Gracia, Ismael
• López‐Aranguren, Pedro
• González‐Marcos, José A.
• Armand, Michel
• Rodriguez‐Martinez, Lide M.
• Zhang, Heng
• Li, Chunmei

Titel

Understanding the Role of Nano‐Aluminum Oxide in All‐Solid‐State Lithium‐Sulfur Batteries

Ist Teil von

• ChemElectroChem, 2019-01, Vol.6 (2), p.326-330

Ort / Verlag

Weinheim: John Wiley & Sons, Inc

Erscheinungsjahr

2019

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• Aluminum oxide (Al2O3) is a well‐known electrolyte filler for stabilizing the Li‐metal (Li0) anode in all‐solid‐state Li0‐based batteries. However, its strong interactions with lithium polysulfides (PS) hinder the direct application of Al2O3‐added electrolytes in all‐solid‐state lithium‐sulfur batteries (ASSLSBs). Herein, the role of Al2O3 in ASSLSBs both as electrolyte filler and cathode additive is studied. The combination of Al2O3‐added electrolyte and Al2O3‐added S8 cathode with optimum cell configuration could deliver an unprecedented discharge capacity of 0.85 mAh cm−2 (C/10, 30 cycles) for polymer‐based ASSLSBs. These results suggest that the rational incorporation of Al2O3 can lead simultaneously to PS anchoring and Li0 anode stabilizing benefits from the ceramic filler, thus improving the electrochemical performance of ASSLSBs. Understanding of the role of Al2O3 in lithium‐sulfur batteries is used as the starting point for a novel all‐solid‐state L−S battery design, where the optimum implementation of the ceramic filler allows it to simultaneously act as PS reservoir additive in the cathode and as anode stabilizer filler in the electrolyte, improving system stability and reversibility.